ci: move pipeline_summary tool to .marge/hooks
Move the tool to summarize a failed pipeline to a generic .marge/hooks directory. This will allow the fdo-bots repo to handle all marge hooks in a consistent way across repositories that use this service.
Add a symlink to the bin/ci directory so that the pipeline summary tool can still be run locally as well.
Related to: freedesktop/fdo-bots!27 (merged)
Edited by Deborah Brouwer